Steam-turbine



. B. LEE.

L. E. WHITON AND H STEAM TURBINE.

APPLICATION FILED MAR- I3, 1920.

Patented July 12, 1921.

3 SHEETSSHEET H 7 /NVNTOR5 L.E. WHITON ANDHB. LEE 7 W TM ATTORNEYS.

L. E. WHITON AND H. B. LEE.

STEAM TURBINE APPLICATION FILED MAR-13, 1920.

Patented July 12, 1921.

3 SHEETS-SHEET 2 L. E. WHITON AND H. B. LEE.

STEAM TURBINE.

APPLICATION FILED MAR. 13. 1920.

Patented July 12, 1921.

3 SHEETS-SHEET 3.

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Specification of Letters Patent' Patented July 12, 1921. l:

Application fi1ed March13, 1920. Serial'No. 365,589.,

To all 'tU/LOm it may concern:

Be'it known that we, LUoIUs E. lVHiToN and, Hanan B. Lnn, citizens of the United States, residing at New London, in; the

county of New London and. State of 0011-. necticut, have invented anew and useful Improvement in Steam-Turbines; and we do hereby declare thei'ollowing, when taken in connection with the accompanying. draw.- ings and the characters o f reference marked thereon, tobe a full, cleanandexact description of thesame, and wh1ch said drawings Fig. 5, a detached view of one of the pri' mary nozzles.

Fig. 6, acorresponding View of one of the secondary nozzles.

Our invention relatesto an improvement in steamturbines,'tl1e object being to provide improved means for mounting and positioning their nozzles, whereby the same are positively held against displacement in I use by the impact of steam under high tension or by the vibration oi the parts of the turbine.

With these ends in view, our invention consists in a steanrturbine having certain details of construction as will be hereinafter described and pointed out in the claims.

For the illustration of our invention, we have chosen to show it as applied to a turbine having primary and secondary nozzles or jets, though it is equally applicable to turbines having only primary nozzles.

As herein shown, the rotor 3, which may be of any approved constructiomis located in a steam-chamber 4: formed'within a twopart horizontally split casing, consisting of an upper member 5 and a lower member (3,

which latter forms theibase and carries the bearings; 'l of the rotor-shaft 8. H I

Coming now to our present improvement, the inner faceeof the left-hand side wall of the steam-chamber 4 is formed withan inwardly projecting, two-part, concentric offset .9, the two halves oi which are respectively formed within the upper and lower halves 5 and-ithe casing. The said oifset contains an annular.steam-passage1O of rectangular cross-section to which steamis supplied through an intake-port 11 in the'lower or base-member 6 of the casing. Theverti cal or inner face of the said concentric offset 9 lS 'iOllZlGClWVlfill four, equi-distant, horizontal, ro und1 holes 12, the inner ends of which are, encircled. by, shallow, circular, position. ing-recesseslSintersected-and connected by a shallow, virtually annular, positioninggroove l l comprising four segments united by the said positioning-recesses 18.

The said positioning-recesses; are ust large enough in diameter to' receive circular hubs 15 formed at the inner ends of the primary steam-nozzles 16, which may be of any-approved construction so long as they are furnished with outwardly turned positioningfingers 17 adapted to be entered into the concentric positioning-groove let, whereby the nozzles are unalterahly positioned in the steam-chamber 4 in proper relation to the buckets of: the rotor 3, and held against lat eral displacement by turning upon their circular hubs as centers no matter how severe the steam-impact or vibration of the parts when the turbine is running at high speed.

F or securing the nozzle 1.6 in place, their hubs are internally t-h.readed,as at 18 for.

the reception of externally threaded'steamthiinbles 19, the outer. ends of which are formed with flanges-2O and which are in troduced into the holes 12 aforesaid in the vertical face of the concentric offset 9 through assembly-holesQl registering therewith and formed in the left-hand wall of the casing, the said assembly-holes 21 being normally closed by screw-caps 22 and serving also, in the initial construction of the steam turbine, to permit the introduction of the tools required for forming the holes 12 and the shallow recesses 13. steanrthiinbles 19 are formed with polygonal passagespermitting the introduction of a As shown, the

polygonal tool by means of which they are screwed into place and removed.

The provision for positioning and securing in place the secondary nozzles 23 (Fig. 6) isfthe same in principle as already described for the primary nozzles 16. The nozzles 23 have positioning-hubs 24; entering equi-distant shallow, circular recesses 25 formed in the inner face of the right-hand wall of the steam-chamber 4 and receiving cap-screws 27 passed inward through the said wall, the inner face of which is formed with an annular positioning-groove 28 cor-' responding to the groove 14;, intersecting the positioningrecesses 25 and receiving the positioning-fingers 27 of the nozzles '23.

By forming the nozzles 16 and 23 with positioning-hubs and positioning'fingers and inserting the same into positioningrecesses and positioning-grooves, as described, the nozzles are firmly held in place against lateral displacement by the energy of the steam or by the vibration of the parts of the turbine.

e e claim:

1. A steam-turbine having one of the side walls of its steam-chamber formed with equi-distant positioning-recesses united by 7 an annular positioning-groove, in combina tion wlth steam-nozzles having hubs entering the said recesses, and fingers entering the said groove, whereby the nozzles are positively held against lateral displacement. 2. A steam-turbine having one of the side walls of its'steam-chamber formedwith a concentric offset containing an annular steam-passage and having its vertical wall formedwith steam-holes, with positioningrecesses concentric with the inner ends of the said holes, and with an annular positioning-groove intersecting the said recesses;

and the said side wall of the casing being also formed with. assembly-holes register ing withthe said steam-holes in the said channel offset; in combination with-nozzles having positioning-hubs at their inner ends and positioning-fingers at their outer ends for respective insertion'into the said posi tioning-recesses and groove,' whereby the nozzles are positively held against lateral displacement.

Intestim-ony whereof we have signed this specification in the presence of two subscribing witnesses. 1 V

LUCIUS E. VVHITON. HENRY B. LEE.

Witnesses i V EDWARD P; Eecnnsroia M. J. CHANDLER. 

